/*
* Copyright 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.media2.widget;
import android.content.Context;
import android.os.Build;
import android.util.AttributeSet;
import android.view.View;
import android.view.ViewGroup;
import androidx.annotation.AttrRes;
import androidx.annotation.CallSuper;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
abstract class MediaViewGroup extends ViewGroup {
private boolean mAggregatedIsVisible = false;
MediaViewGroup(@NonNull Context context) {
super(context);
}
MediaViewGroup(@NonNull Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
}
MediaViewGroup(@NonNull Context context, @Nullable AttributeSet attrs,
@AttrRes int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
@Override
protected void onVisibilityChanged(@NonNull View view, int visibility) {
if (Build.VERSION.SDK_INT < 24) {
// onVisibilityAggregated() is introduced at API 24.
// This is added to make the behavior compatible on < 24 devices.
if (getWindowVisibility() == VISIBLE) {
boolean newIsVisible = isShown();
if (mAggregatedIsVisible != newIsVisible) {
onVisibilityAggregatedCompat(newIsVisible);
}
}
}
}
@Override
protected void onWindowVisibilityChanged(int visibility) {
if (Build.VERSION.SDK_INT < 24) {
// onVisibilityAggregated() is introduced at API 24.
// This is added to make the behavior compatible on < 24 devices.
if (isShown()) {
onVisibilityAggregatedCompat(visibility == VISIBLE);
}
}
}
@Override
@RequiresApi(24)
public void onVisibilityAggregated(boolean isVisible) {
super.onVisibilityAggregated(isVisible);
onVisibilityAggregatedCompat(isVisible);
}
@CallSuper
void onVisibilityAggregatedCompat(boolean isVisible) {
mAggregatedIsVisible = isVisible;
}
boolean isAggregatedVisible() {
return mAggregatedIsVisible;
}
}